Investigation of water drainage through an alpine glacier by tracer experiments and numerical modeling:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | German |
| Veröffentlicht: |
Zürich
VAW
2002
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| Schriftenreihe: | Mitteilungen aus der Versuchsanstalt für Wasserbau an der Eidgenössischen Technischen Hochschule in Zürich
177 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | Zugl.: Zürich, Eidgenössische Techn. Hochsch., Diss., 2002 |
| Beschreibung: | 146 S. Ill., graph. Darst. |
Internformat
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Datensatz im Suchindex
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| adam_text | [O VA-W AT* VERSUCHSANSTALT FUR WASSERBAU HYDROLOGIE UND GLAZIOLOGIE DER
EIDGENOSSISCHEN TECHNISCHEN HOCHSCHULE ZURICH MITTEILUNGEN 177
INVESTIGATION OF WATER DRAINAGE THROUGH AN ALPINE GLACIER BY TRACER
EXPERIMENTS AND NUMERICAL MODELING INSTITUT FDR WASSERBAL 1 E . . UND
WASSERVVIRT8CHAF1 THOMAS SCHULER TECHNISCHE UNIVEFISITAR I,A:,, SIADT
PETEHSEN3TR. 13. 84267 DARMSTAD-7 TEL. 0 81 51 /16 21 43 * FAX: 1=8 32
43 ZURICH, 2002 HERAUSGEBER: PROF. DR.-LNG. H.-E. MINOR BIBLIOTHEK
WASSER UND UMWELT EK WASSER UND U (TU DARMSTADT) CONTENTS CONTENTS III
LIST OF FIGURES VII LIST OF TABLES XI LIST OF SYMBOLS XIII ABSTRACT XIX
ZUSAMMENFASSUNG XXI 1 INTRODUCTION 1 1.1 SIGNIFICANCE OF GLACIAL
HYDROLOGY 1 1.1.1 GLACIER DYNAMICS 1 1.1.2 GLACIAL DISCHARGE 2 1.2
TECHNIQUES OF INVESTIGATION 3 1.3 STUDY AREA: UNTERAARGLETSCHER . 4 1.4
OBJECTIVES 5 1.5 STRUCTURE OF THE THESIS 8 2 GLACIAL HYDROLOGY: A
PROCESS REVIEW 9 2.1 RUNOFF GENERATION AT THE SURFACE 9 2.1.1 SURFACE
ENERGY BALANCE 9 2.1.2 IMPORTANCE OF ENERGY FLUXES 10 2.2 WATER FLOW
THROUGH THE GLACIER 12 2.2.1 FIM AND SUPRAGLACIAL HYDROLOGY 12 2.2.2
ENGLACIAL PASSAGEWAYS 13 2.2.3 SUBGLACIAL HYDROLOGY 14 2.3
CHARACTERISTICS OF GLACIAL RUNOFF 18 2.3.1 VARIABILITY DUE TO MELTWATER
GENERATION PROCESSES 18 2.3.2 VARIABILITY DUE TO ROUTING PROCESSES 20
III IV CONTENTS 3 WATER BALANCE 21 3.1 METHODS 21 3.1.1 METEOROLOGICAL
RECORDS 21 3.1.2 DETERMINATION OF SURFACE MELT 22 3.1.3 GLACIAL RUNOFF
27 3.2 RESULTS 29 3.2.1 INPUT INTO GLACIAL SYSTEM 29 3.2.2 OUTPUT FROM
GLACIAL SYSTEM 30 3.2.3 WATER BALANCE 31 3.2.4 RAINFALL-INDUCED OUTBURST
34 3.3 DISCUSSION 34 4 TRACER TESTS AND THEIR ANALYSIS 37 4.1 PRINCIPLES
OF TRACER EXPERIMENTS 37 4.1.1 REQUIREMENTS ON TRACERS 37 4.1.2
PROPERTIES OF FLUORESCENT DYES AND OTHER TRACERS 38 4.2 TRANSPORT MODELS
38 4.2.1 ADVECTION-DISPERSION MODEL 39 4.2.2 MOBILE-IMMOBILE MODEL 40
4.3 ANALYZING RESULTS FROM TRACER TESTS 41 4.3.1 VARIATION OF VELOCITY
WITH DISCHARGE 41 4.3.2 VARIATION OF DISPERSION WITH VELOCITY 42 4.3.3
PARTICULARITY OF A GLACIAL DRAINAGE SYSTEM 42 5 FIELD EXPERIMENTS AT
UNTERAARGLETSCHER 45 5.1 PROCEDURE IN THE FIELD 45 5.1.1 TRACER
EXPERIMENTS 45 5.1.2 DISCHARGE MEASUREMENTS 47 5.2 DATA PROCESSING 49
5.2.1 COMPILATION OF A CONTINUOUS DISCHARGE SERIES 49 5.2.2
PREPROCESSING OF TRACER RETURN CURVES 50 5.2.3 SINGLE-PEAKED RETURN
CURVES . . . K 51 5.2.4 DOUBLE-PEAKED RETURN CURVES 53 CONTENTS V 5.3
EXPERIMENT RESULTS 55 5.3.1 TRACER RETURN 55 5.3.2 ANALYSIS OF RETURN
CURVES 56 5.4 DISCUSSION 60 5.4.1 EXPERIMENT DESIGN 60 5.4.2 CHOICE OF
THE TRANSPORT MODEL 61 5.4.3 HYDRAULIC IMPLICATIONS 62 6 MODELING
VARIATIONS OF TRANSIT VELOCITY 67 6.1 VISUALIZATION OF CHANNELIZED
DRAINAGE 67 6.2 BACKGROUND 68 6.3 MODEL THEORY 69 6.3.1 ASSUMPTIONS 69
6.3.2 MODEL EQUATIONS 70 6.4 MODEL IMPLEMENTATION 74 6.4.1 FLOW
RESISTORS 74 6.4.2 NUMERICAL SCHEME 75 6.5 BEHAVIOR OF THE MODEL 77
6.5.1 VALIDATION OF STEADY-STATE PROFILE 77 6.5.2 RESPONSE TO DISCHARGE
VARIATIONS OF DIFFERENT PERIODS 79 6.6 MODEL APPLICATIONS 82 6.6.1
VARIATIONS OF VELOCITY IN A SUBGLACIAL CHANNEL 82 6.6.2 RETARDATION IN A
TRIBUTARY MOULIN 84 6.7 RESULTS 86 6.7.1 VARIATIONS OF VELOCITY IN A
SUBGLACIAL CHANNEL 86 6.7.2 RETARDATION IN A TRIBUTARY MOULIN 91 6.8
DISCUSSION 94 6.8.1 R-CHANNEL MODEL 95 6.8.2 CHOICE OF ROUGHNESS
PARAMETERS 95 6.8.3 VELOCITY VARIATIONS DUE TO A DYNAMIC GEOMETRY 98
6.8.4 VELOCITY VARIATIONS DUE TO INFLOW MODULATION 99 VI CONTENTS 7
MODELING VARIATIONS OF TRACER DISPERSION 101 7.1 TURBULENT FLOW FIELD
101 7.2 MODEL DESCRIPTION 102 7.2.1 NUMERICS 103 7.2.2 MODEL GEOMETRY
103 7.2.3 TRACER TRANSPORT 103 7.2.4 EXTENDING THE LENGTH SCALE 105
7.2.5 MODEL PERFORMANCE 107 7.3 EXPERIMENTS 108 7.4 RESULTS 110 R 7.5
DISCUSSION 112 8 SYNTHESIS 115 8.1 CONCLUDING DISCUSSION 115 8.2 OUTLOOK
117 A RESULTS OF INDIVIDUAL TRACER TESTS 119 A.1 ADVECTION-DISPERSION
MODEL RESULTS 119 A.2 MOBILE-IMMOBILE MODEL RESULTS 126 BIBLIOGRAPHY 131
ACKNOWLEDGEMENTS 145
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| language | German |
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| physical | 146 S. Ill., graph. Darst. |
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| series | Mitteilungen aus der Versuchsanstalt für Wasserbau an der Eidgenössischen Technischen Hochschule in Zürich |
| series2 | Mitteilungen aus der Versuchsanstalt für Wasserbau an der Eidgenössischen Technischen Hochschule in Zürich |
| spelling | Schuler, Thomas 1971- Verfasser (DE-588)1058236857 aut Investigation of water drainage through an alpine glacier by tracer experiments and numerical modeling Thomas Schuler Zürich VAW 2002 146 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Mitteilungen aus der Versuchsanstalt für Wasserbau an der Eidgenössischen Technischen Hochschule in Zürich 177 Zugl.: Zürich, Eidgenössische Techn. Hochsch., Diss., 2002 Gletscher (DE-588)4137668-7 gnd rswk-swf Drainage (DE-588)4125851-4 gnd rswk-swf Wasser (DE-588)4064689-0 gnd rswk-swf Alpen (DE-588)4001328-5 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Alpen (DE-588)4001328-5 g Gletscher (DE-588)4137668-7 s Wasser (DE-588)4064689-0 s Drainage (DE-588)4125851-4 s DE-604 Mitteilungen aus der Versuchsanstalt für Wasserbau an der Eidgenössischen Technischen Hochschule in Zürich 177 (DE-604)BV000019874 177 HEBIS Datenaustausch Darmstadt application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=010587050&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Schuler, Thomas 1971- Investigation of water drainage through an alpine glacier by tracer experiments and numerical modeling Mitteilungen aus der Versuchsanstalt für Wasserbau an der Eidgenössischen Technischen Hochschule in Zürich Gletscher (DE-588)4137668-7 gnd Drainage (DE-588)4125851-4 gnd Wasser (DE-588)4064689-0 gnd |
| subject_GND | (DE-588)4137668-7 (DE-588)4125851-4 (DE-588)4064689-0 (DE-588)4001328-5 (DE-588)4113937-9 |
| title | Investigation of water drainage through an alpine glacier by tracer experiments and numerical modeling |
| title_auth | Investigation of water drainage through an alpine glacier by tracer experiments and numerical modeling |
| title_exact_search | Investigation of water drainage through an alpine glacier by tracer experiments and numerical modeling |
| title_full | Investigation of water drainage through an alpine glacier by tracer experiments and numerical modeling Thomas Schuler |
| title_fullStr | Investigation of water drainage through an alpine glacier by tracer experiments and numerical modeling Thomas Schuler |
| title_full_unstemmed | Investigation of water drainage through an alpine glacier by tracer experiments and numerical modeling Thomas Schuler |
| title_short | Investigation of water drainage through an alpine glacier by tracer experiments and numerical modeling |
| title_sort | investigation of water drainage through an alpine glacier by tracer experiments and numerical modeling |
| topic | Gletscher (DE-588)4137668-7 gnd Drainage (DE-588)4125851-4 gnd Wasser (DE-588)4064689-0 gnd |
| topic_facet | Gletscher Drainage Wasser Alpen Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=010587050&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| volume_link | (DE-604)BV000019874 |
| work_keys_str_mv | AT schulerthomas investigationofwaterdrainagethroughanalpineglacierbytracerexperimentsandnumericalmodeling |